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(No Model.)

0. E. KIMBALL.

GUT-OFF VALVE GEAR.

No. 279,253. Patented June 12,1883.

In vcniar. f/zarles .EKz'mali 5y his Attorney.

N. PEYERS. Phnlu-Lmwgnphan Viz-Mu tan. D. c.

UNITED STATES PATENT OFFICE.

CHARLES E. KIMBALL, OF LEADVILLE, COLORADO.

CUT-OFF-VALVE GEAR.

SPECIFICATION forming part of Letters Patent No. 279,253, dated June 12,1883.

I Application filed February 8, 1883. (No model.)

To all whom it may concern Be it known that 1, CHARLES E. KIMBALL, acitizen of the United States of America, residing at Leadville, in thecounty of Lake and State of Colorado, have invented certain new anduseful Improvements in a Cut-Off-Valve Gear for Steam-Engines; and I' dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same, reference being had to theaccompanying drawings. and to letters or figures of reference markedthereon, which form a part of this specification, and in which- Figure 1is a top plan, showing my improvement. Fig. 2 is a side elevation.

My invention has for its object to work a cut-off by means of apendulum, whereby the '20 engineshall make the same number ofrevolutions each minute, and which I will now proceed to describe.

Referring to the drawings, A represents the steam-cylinder; B, thevalve-chamber; C, the piston-rod. D is a standard attached to the frameof the engine. E is a box upon the top of the standard D, provided witha removable top, E, secured by means of screws. F is a bolt or pinworking in said box E, to one end 0 of which pin is secured the end a ofthe arm G. H is the eccentric-rod; I, the main-valve rod. The lower end,b, of the arm G is secured to the end of the eccentric-rod, where itconnects with the main-valve rod by means of a 3 5 bolt, 0. Attached tothe arm G, just below the bolt or pin F, is a bolt, d, and swinging uponthis bolt is the pendulum K, having the ball 6 and slot f. L is thecutoff-valve rod, secured at one end to the bolt or pin 9, said pin 9work- 0 ing in the slot f .of the pendulum K.

The operation of my invention is as follows:

WVhen the engine is started, the arm G, being connected with theeccentric-rod H, is swung back and forward, and the pin d on said arm,and on which pin is hung the pendulum K, moves with said arm. Thetendency of the ball a is to seek the center of gravity under said pin,and asthe same changes its position the pendulum is caused to swing backand forward, the ball 0 being of sufficient weight to force the-cut-off-valve rod in and out, and thus impart a regular reciprocatingmotion to said rod.

' Having thus fully described my invention, I claim 1. Thependulum K andmeans for operating said pendulum, in combination with a cut-oil'- valverod connected with and driven by said pendulum K, whereby the cut-off isgiven a regular reciprocating motion, substantially as shown anddescribed.

2. The combination of the standard D, box E, pin F, arm G, bolt d,pendulum K, cut-off rod L, and bolt g, substantially as and for thepurpose shown and described. r

3. The combination of the standard D, box E, pin F, arm G, eccentrierodH, bolt 0, pendulum K, bolt (1, cut-off rod L, and bolt 9, substantiallyas and for the purpose shown and described. v

4. The combination of the standard D, box E, pinF, arm G, eccentric-rodH, bolt 0, pendulum K, having the slot f, bolt (1, cut-off rod L, andbolt 9, substantially as and for the purpose shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

CHARLES E. KIMBALL.

WVitnesses:

H. R. PENDERY, J. L. PENDERY.

